AutotestForPHP is based off of ZenTest autotest which is a popular Ruby tool for running tests as soon as files get changed:
* http://www.zenspider.com/ZSS/Products/ZenTest/
Code for displaying notifications is based on Carlos Brando autotest-notification gem:
* http://github.com/carlosbrando/autotest-notification
The tool was written on Ruby but you don't need to be a Ruby programmer in order to use it, just make sure you have Ruby and RubyGems installed:
* http://www.ruby-lang.org
* http://rubygems.org/read/chapter/3